KM4 SERIES KM4A1 KM4 CQB OPERATOR S MANUAL Please read this manual carefully before using the Airsoft gun.
KM4 SERIES TABLE OF CONTENTS Warranty... 3-4 Use of this Manual...5 Safety Guidelines... 5-6 Specifi cations and Package Contents: KM4A1...7 KM4 CQB...8 Battery Installation and Fuse...9 Loading BBs...10 Using KWA High Performance BB Loader...11 Loading Magazine...12 Fire Selector Switch...12 Front and Rear Sight Adjustment...13 Disassembly...14 Assembly...14 Cleaning...15 Hop-Up System...16 Troubleshooting...17 Operating Under Unusual Conditions...17 Diagram and Parts Lists: KM4A1 Parts Diagram... 18-19 KM4A1 Parts List... 20-21 KM4 CQB Parts Diagram... 22-23 KM4 CQB Parts List... 24-25 KWA 2GX Gearbox Parts Diagram...26 K120 Magazine Parts Diagram...27 2
WARRANTY KWA PERFORMANCE INDUSTRIES, INC. 18571 E. Gale Ave. City of Industry, CA 91748 (626) 581-1777 THANK YOU FOR PURCHASING A KWA PERFORMANCE INDUSTRIES, INC. PRODUCT. KWA Performance Industries, Inc. is committed to serving our customers with the finest quality products, the highest level of service, and the best customer satisfaction. Because of this, we offer a 90 day warranty on all KWA products we import and distribute. Warranty Coverage Except as specified below, this warranty covers all defects in material and workmanship in KWA products that occur during the above warranty period. The following are not covered by the warranty: (1) Any product which is not imported and distributed in the U.S.A. by KWA PERFORMANCE INDUSTRIES, INC. (2) Any products not purchased in the U.S.A. from a KWA AUTHORIZED RESELLER. If you are uncertain as to whether a reseller is a KWA AUTHORIZED RESELLER, please contact KWA PERFORMANCE INDUSTRIES, INC. as listed above or visit our website www.kwausa.com/ where-to-buy (3) Damages, deterioration, or malfunction resulting from: a) An accident, act of nature, abuse, misuse, neglect, opening of or modification or failure to follow instructions supplied with the product. b) Repair or attempted repair by anyone not authorized by KWA PERFORMANCE INDUSTRIES, INC. c) Removal of the orange safety tip. (4) Use of the product outside the U.S.A. (5) Damaged batteries or improper use of bullets (BBs), or non approved propellants (ie. Propane, Red Gas, 134a etc.) (6) Use in industrial, commercial, and/or professional applications. What KWA Will Pay For If your KWA product is found to be defective by KWA Performance Industries, Inc. during the applicable warranty period from the date of original purchase, KWA Performance Industries, Inc. will repair, or at its option, replace with new, used, or equivalent model, the defective product without charge for parts or labor. 3
KM4 SERIES How To Obtain Warranty Service If your product needs service, it may be taken or shipped to KWA Performance Industries, Inc. The following procedures apply whenever your unit must be transported for warranty service: You must go to the Help Desk at www.kwausa.com/support to obtain an RMA number. THE RMA NUMBER MUST BE CLEARLY MARKED ON THE OUTSIDE OF THE PACKAGE. PACKAGES WITHOUT AN RMA NUMBER CLEARLY MARKED WILL BE REFUSED AND RETURNED TO THE SENDER. You are responsible for transporting your unit or arranging for its transportation. If shipment of your unit is required; you must pay the initial shipping fee, but we will pay the return shipping charge if the repairs are covered by the warranty. WHEN RETURNING YOUR UNIT FOR WARRANTY SERVICE, A COPY OF THE ORIGINAL SALES RECEIPT MUST BE ATTACHED. You must include the following: RMA number, your name, address, daytime telephone number, model and serial number (if applicable) of the product and a description of the problem. This Warranty is Only Valid in the United States If your product does not require service, but you have questions regarding its operation, please contact our Help Desk at www.kwausa.com/support. THIS WARRANTY IS EXPRESSLY MADE IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WITHOUT LIMITATION, WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. OUR LIABILITY IS LIMITED TO THE REPAIR OR REPLACEMENT, AT OUR OPTION, OF ANY DEFECTIVE PRODUCT AND SHALL IN NO EVENT INCLUDE INCIDENTAL OR CONSEQUENTIAL COMMERCIAL OR PROPERTY DAMAGES OF ANY KIND. WE ARE NOT RESPONSIBLE FOR PRODUCTS LOST, STOLEN AND/OR DAMAGED DURING SHIPPING. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS AND/OR DO NOT ALLOW THE EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU. This warranty gives you specific legal rights, but you may also have other rights which vary from state to state. This Warranty may not be altered other than in writing signed by an officer of KWA Performance Industries, Inc. 4
USE OF THIS MANUAL Before operating the Airsoft gun, read this manual in its entirety. Important safety topics and tips are discussed throughout all of the chapters. It s important that the operator know the principles of gun handling, safety, and operation prior to fi ring the Airsoft gun. SAFETY GUIDELINES Safety Distance The effective shooting range is approximately 175 feet. BBs fi red from this Airsoft gun may travel farther than intended. Make certain that you have an adequate backstop. Eye Protection Eye protection should be worn at all times when both shooting and maintaining your Airsoft gun. Protect your eyes from BBs under pressure while performing maintenance on your Airsoft gun. Assume Every Gun is Always Loaded Until you are certain the chamber is empty, treat every gun as if it were loaded. Do not assume the chamber is empty based on your memory or someone else s words. Always remove the magazine and visually check to confi rm the chamber is empty. Beware of Barrel Obstructions Ensure the Airsoft gun barrel is free of obstructions before you fi re the gun. Even the smallest obstruction such as dirt, dust, or a stuck cleaning patch can cause a jam, misfi re, or malfunction. Muzzle Control Always keep the muzzle of the gun pointed in a safe direction. Never point the muzzle at a person or object that you do not intend to shoot. Keep Your Safety On Keep the gun s safety on until your sights are aligned on your target and you are ready to fi re. Keep Your Finger Off The Trigger Keep your fi nger off the trigger and out of the trigger guard until your sights are aligned on your target and you are ready to fi re. Identify Your Target and Backstop Before you pull the trigger, make certain of your target and what is beyond it. The Airsoft gun should never be fi red at surfaces such as rocks, glass, water, or other hard surfaces where BBs are likely to ricochet in unpredictable directions.! WARNING: - Airsoft BBs can be a choking hazard. Keep them away from children. - Failure to follow safety guidelines may result in serious injury. 5
KM4 SERIES SAFETY GUIDELINES (CONTINUED) Failure To Fire If the Airsoft gun fails to fi re, misfi res, or malfunctions, do not look into the gun barrel. BBs can become lodged into the chamber, and serious eye injury may occur. Maintain Your Gun Properly Performing proper maintenance, as outlined in this manual, ensures that your Airsoft gun will be safe to shoot and will perform to its designed specifi cations for many years. Alterations, modifi cations or adjustments may damage your Airsoft gun, make it unsafe to shoot, and will void all warranty claims. Store Your Gun Safely Always store the Airsoft gun in a safe place, and out of reach of children. Always transport the Airsoft gun in a carrying case. Never display the Airsoft gun in a public place. Keep the safety engaged, and remove the magazine before storing the Airsoft gun. NOTE: IT IS YOUR RESPONSIBILITY TO TAKE EVERY REASONABLE PRECAUTION TO ENSURE THE SAFE STORAGE AND TRANSPORTATION OF YOUR AIRSOFT GUN. Orange Tip The orange tip on Airsoft guns help Law Enforcement distinguish the replica guns from their real fi rearm counterparts. Altering the coloration or markings required by state or Federal law so as to make the product look more like a fi rearm is dangerous and may be a crime. Operator assumes all risks and responsibility when doing so. Hazards of Being Mistaken for a Real Firearm Airsoft guns have been mistaken by Police and Law Enforcement as real fi rearms. A confrontation with law enforcement while carrying an Airsoft gun can result in serious injury or even death. It is strongly advised to operate the Airsoft gun at a safe and legal location. In the event that you are approached by Law Enforcement personnel, you must comply with their instructions immediately to avoid an incident. Alcohol, Medications, and Drugs Do not handle or operate your Airsoft gun while under the infl uence of alcohol, medication or drugs. Your Responsibility Your Airsoft gun is well-engineered and manufactured to the highest standards. It was carefully inspected before it was packaged and shipped from our factory. Its safe use depends on you alone. You are the ultimate safety device. Like many other devices, your Airsoft gun is safe unless handled in an irresponsible or uneducated manner.! WARNING: - Adult supervision is required for any person under the age of 18. 6
SPECIFICATIONS: KM4A1 Overall Length [Retracted] = 774.7 mm (30.5 ) Overall Length [Extended] = 857.3 mm (33.75 ) Outer Barrel Length = 355.6 mm (14 ) Inner Barrel Length = 395 mm (15.55 ) Inner Barrel Diameter = 6.05 mm Weight (without magazine) = 2.95 kg (6.5 lbs) Barrel thread = -14 mm Caliber = 6 mm Magazine Capacity = 120 rounds Rate of Fire = 20+ RPS Velocity = 118~125 MPS (390~410 FPS)* Energy Output with 0.20g BB = 1.07 Joules Power Source: 9.6v NiMh, 7.4v or 11.1v 15c Li-Po *Individual test results may vary depending on brand of BBs, ambient temperature, and chronograph used. Special Features: Adjustable Front and Rear Sights 6 Position Collapsible LE Stock Fiber Reinforced Hand Guard Semi and Full Auto Select Fire KWA 2GX Gearbox KWA 2G High Performance Bucking Adjustable Hop-Up Full Metal Alloy Receivers Realistic Construction and Field Stripping PACKAGE CONTENTS: KM4A1 1 KM4A1 Airsoft Gun 1 Cleaning Rod 1 120 Round Magazine 1 Owners Manual 1 Sight Adjustment Tool 1 Safety Cap 2 Disassembly Tools 7
KM4 SERIES SPECIFICATIONS: KM4 CQB Overall Length [Retracted] = 673.1 mm (26.5 ) Overall Length [Extended] = 756.5 mm (29.75 ) Outer Barrel Length = 267 mm (10.5 ) Inner Barrel Length = 273 mm (10.75 ) Inner Barrel Diameter = 6.05 mm Weight (without magazine) = 2.49 kg (5.5 lbs) Barrel thread = -14 mm Caliber = 6 mm Magazine Capacity = 120 rounds Rate of Fire = 20+ RPS Velocity = 100~107 MPS (330~350 FPS)* Energy Output with 0.20g BB = 1.07 Joules Power Source: 9.6v NiMh, 7.4v or 11.1v 15c Li-Po *Individual test results may vary depending on brand of BBs, ambient temperature, and chronograph used. Special Features: Adjustable Front and Rear Sights 6 Position Collapsible LE Stock Fiber Reinforced Hand Guard Semi and Full Auto Select Fire KWA 2GX Gearbox KWA 2G High Performance Bucking Adjustable Hop-Up Full Metal Alloy Receivers Realistic Construction and Field Stripping PACKAGE CONTENTS: KM4 CQB 1 KM4 CQB Airsoft Gun 1 Cleaning Rod 1 120 Round Magazine 1 Owners Manual 1 Sight Adjustment Tool 1 Safety Cap 2 Disassembly Tools 8
BATTERY INSTALLATION 1. Set the fire selector to safe mode. Place the safety cap on the barrel end. Slide the retaining ring back and remove the lower part of the hand guard. 2. Place the battery into the lower half of the hand guard. Push the connector plugs together firmly until they click into place. 3. Replace the lower battery cover and slide the retaining ring back into place. Retaining ring Connector Plug Safety Cap 1 1 Hand Guard 2 2 Hand Guard FUSE To replace the fuse, open the hand guard by following the same procedure as the battery installation. Open the fuse assembly and replace the fuse with a 20A glass fuse. Fuse Assembly 9
KM4 SERIES LOADING BBS 1. Release the magazine from the Airsoft gun by pressing the magazine catch button. 2. Feed the BBs into the magazine through the magazine feed lip as shown. **NOTE: The use of a BB loader, such as the KWA High Performance BB Loader, can help make the loading process easier and faster. (See page 11) Loading safety tips: Switch the selector to safe Be sure the safety cap is on Keep your finger off the trigger at all times UTO SEMI SAFE 1 2 ** KWA K120 magazine Magazine Feed Lip! WARNING: - Always use high quality 6mm BBs, weighing 0.2g or heavier. For best results use 0.25g KWA Perfect BBs. Never use recycled or low grade BBs to prevent damage to your gun. - KWA K120 magazines hold 120 rounds of BBs. DO NOT load more than 120 rounds into the magazine. Overloading will cause jamming issues. 10
USING KWA HIGH PERFORMANCE BB LOADER (Purchase Separately) 1. Release the magazine from the Airsoft gun by pressing the magazine release button. 2. Slide open the trap door on top of the BB loader. Fill the BB loader with BBs. *Do Not Overfill. 3. Flip down the dust cover to reveal the loading nozzle. 4. Fit BB loader into the magazine feed lip. 5. Press on BB loader plunger to load BB into magazine. 2 3 loading nozzle 4! WARNING: Always use high quality 6mm BBs, weight 0.2g or higher. For best result use 0.25g KWA Perfect BBs. Never use recycled or low grade BBs to prevent damage to your gun. 11
KM4 SERIES LOADING MAGAZINE 1. Place the loaded magazine into the magazine well. 2. Lightly pull on the magazine to ensure it is locked in properly. 1 Magazine FIRE SELECTOR SWITCH 1. Safe Safe mode is the setting to the left as indicated in the diagram. In this mode the gun will not fi re. For safety reasons, you should keep the switch in Safe mode at all times when you are not ready to fi re 2. Semi-Auto Semi-Auto mode is the middle setting. In this mode the gun will fi re one shot for each time you squeeze the trigger. 1 SAFE 2 SAFE SEMI SEMI AUTO 3. Full Auto Full Auto mode is the setting to the right. In this mode the gun will fi re continuously as long as the trigger is engaged. 3 SEMI SAFE AUTO! WARNING: - Do not squeeze the trigger when switching the fire selector. 12
FRONT AND REAR SIGHT ADJUSTMENT FRONT SIGHT ADJUSTMENT 1. The front sight can be moved up and down to zero the sights. 2. Turn counter clockwise to raise the post. 3. Turn clockwise to lower the post. REAR SIGHT ADJUSTMENT 1. Flip the rear sight between general and precision aiming. 2. To adjust the horizontal point of impact, rotate the windage knob located on the rear of the sight. 3. To adjust the vertical point of impact, rotate the sight elevation knob located on the left and right side of the sight. Small Aperture Use this position for precision fi ring Large Aperture Use this position for full auto fi ring 0-2 Windage Knob The sight assembly is marked in millimeters for precise adjustments UP DOWN Rear Sight Aperture Turn Clockwise Turn Counter- Clockwise Elevation Knob! WARNING: -If turned too far, the front sight will come off. 13
KM4 SERIES DISASSEMBLY 1. Remove magazine. 2. Shoot in semi-automatic mode 2-3 times to clear the barrel and reset the piston. Note: Check and clear the chamber of BB s. 3. Set the selector to SAFE. 4. Remove the rear pin only from the lower receiver with the provided Allen wrenches. 5. Use 1 wrench to hold the cap screw and one to turn the set pin. 6. After removal of the cap screw, use the allen wrench to push the pin out. 7. Pull the upper receiver up. 8. Slide out the inner barrel with Hop-Up assembly. 7 4 8 Cap Screw 6 5 Retaining Pin ASSEMBLY 1. Insert the inner barrel and Hop-Up assembly into the upper receiver. 2. Secure the Hop-Up assembly into the upper receiver. Push down the upper receiver to close. 3. Align the pin holes. Insert the pin and use the allen wrench to tighten the cap screw. 2! WARNING: - Always place the safety cap on the barrel tip when servicing your gun. Be sure the fire selector is set to SAFE. - If the receiver does not open, repeat step 2 as necessary. 14
CLEANING The Airsoft gun inner barrel should be cleaned after each shooting session. Regular cleaning prevents the eff ects of BB residue buildup that can hinder performance. 1. Ensure that the safety is engaged. 2. Remove the magazine and clear the chamber of loaded BBs. 3. Disassemble the receiver (see Disassembly section pg. 14). 4. Steps to use cleaning rod: a. Cut a piece of clean cotton cloth to 1 inch by 0.5 inch size. Insert one end of the cloth into the hole in the cleaning rod (adjust the length of cloth for smooth entry into the barrel). b. Wind the cloth around the cleaning rod. c. Insert the cleaning rod into the inner barrel, and push the rod through. d. Remove the cleaning rod and check the cotton cloth for dirt. Repeat a-c when necessary. cotton cloth 4 cleaning rod! WARNING: - Unload and clear the Aisoft gun before cleaning. - DO NOT use spray silicone oil as a cleaning solution for the inner barrel. 15
KM4 SERIES HOP UP SYSTEM The Hop-Up device is one of KWA s standard features, giving Airsoft BBs greater stability, further travel, and increased accuracy. Airsoft BBs are lightweight and can be aff ected by wind when fi red. With the Hop-Up system, the trajectory of the Airsoft BBs can be adjusted according to the shooting environment or surroundings. HOP-UP ADJUSTMENT 1. Test fi re the gun to determine the amount of hop needed. 2. Remove the magazine. 3. Pull the charging handle back to clear chamber and open the ejection port cover. 4. Turn the Hop-Up Dial to adjust hop. 5. Turn dial to the left for less hop, turn dial to the right for more hop. 6. Test fi re and adjust as needed. DECREASE HOP-UP INCREASE HOP-UP HOP-UP ADJUSTMENT POINT BB TRAJECTORY PATTERN BB DROPS FREELY ADJUSTMENTS TURN KNOB TO RIGHT BB TRAVELS AT SHORT TRAJECTORY PATH BB TRAVELS DISTANCE AT FLAT TRAJECTORY PATH BB TRAVELS FLAT IN SHORT DISTANCE, THEN GOES UP IN CURVE AND DROPS FREELY BB TRAVELS AT UNSTABLE SPEED AND IRREGULAR PATH TURN KNOB SLIGHTLY TO RIGHT NO ADJUSTMENT MADE TURN KNOB SLIGHTLY TO LEFT TURN KNOB TO LEFT! WARNING: - Do not release the charging handle while adjusting the hop. 16
BASIC TROUBLESHOOTING GUIDE FOR RIFLES SYMPTOMS POSSIBLE CAUSE SOLUTIONS Airsoft gun is not fi ring Selector set to Safe Mode Motor damaged or bad connection Select Semi-Auto or Full-auto Mode Return gun for professional care Pinched wiring Return gun for professional care Motor or battery is hot after use Pinched wiring Return gun for professional care Semi-Auto feature not functioning High pitch or grinding noise BB double feeding/rolling out of barrel Inner barrel is jammed Motor damaged or bad connection Incorrect timing Gear may be damaged/ Motor level not adjusted Hop-Up unit is contaminated Hop-Up unit may be damaged Use of low quality/recycled BBs Inner barrel is contaminated Inner barrel is damaged Return gun for professional care Dry fi re on Full-Auto Return gun for professional care Clean Hop-Up unit with cleaning rod Return gun for professional care Use KWA Perfect BBs or other high quality BBs Clean inner barrel with cleaning rod Return gun for professional care OPERATING UNDER UNUSUAL CONDITIONS Unusual conditions are defi ned as any condition requiring special maintenance. Perform maintenance outlined for the climate similar to your operational area. Extreme Cold: Operating an Airsoft gas gun in extremely cold temperatures is not recommended. Cold temperatures will cause the Hop-up Bucking to harden, reducing its eff ectiveness. Gas will not expand properly in cold temperatures, so both the cycling rate and power will be dramatically reduced. Extreme Heat: Operating an Airsoft gas gun in extremely hot temperatures is also not recommended. Leaving the gun in direct sunlight for long periods of time, or operating in extremely hot areas will cause the gas to over-expand, damaging the internal workings of the gun. The increase in internal pressure from the expanding gas can also damage the seals and cause leaks in the magazine. Dust or Sand: Dust or sand can get into a gas gun and cause malfunctions and/or excessive wear. Keep the gun covered whenever possible. Use lubricant sparingly, as lube naturally attracts dirt and other particles. After use in a dusty area, always fi eld strip the gun (refer to Disassembly Section) and clean any areas you can reach with a soft, lint-free cloth. 17
126 16 162 127 159 243 2 5 125 13 226 243 15 14 158 171 257 258 287 239 91 277 214 49 114 165 299-1 276 275 297 303 304 278 236 231 284 298 285 237 263 299 269 267 300 244 265 250 249-1 110 203 142 35 101 266 89 88 104 296 161 1 203 36 242 128 19 69 68 175 193 176 KM4A1 PARTS DIAGRAM KM4 SERIES 18
25 163 7 204 47 229 164 48 252 209 24 6 182 77 196 82 240 80 81 219 253 254 174 227 208 208 115 57 115-1 9 85 236 138 123 66 17 37 210 3 120 46 173 67 205 8 121 83 198 198 138 135 185 218 134 183 26 28 233 131 27 194 72 217 29 133 290 202 283 271 295 282 259 293 302 260 215 291 274 292 295 296 229 261 294 202 290 201 272 301 218 201 273 262 KM4A1 PARTS DIAGRAM 19
KM4 SERIES KM4A1 PARTS LIST Parts # Description 199-1002-1 Forward Assist Button 199-1002-2 Inner Barrel Retainer 199-1002-3 BB Ramp 199-1002-5 Hop-Up Housing 199-1002-6 Selector Lever Detent 199-1002-7 Bolt Plate Carrier 199-1002-8 Selector Cover 199-1002-9 Grip 199-1002-13 Hop-Up Adjustment Wheel 199-1002-14 Hop-Up Spindle (Small) 199-1002-15 Hop-Up Spindle (Large) 199-1002-16 Hop-Up Bar 199-1002-17 Lower Receiver 199-1002-19 Ejection Port Cover Lock Plunger 199-1002-24 Selector Plate 199-1002-25 Charging Handle Spring Hook 199-1002-26 Retracting Stock 199-1002-27 Swivel Cover 199-1002-28 Stock Latch Spacer 199-1002-29 Stock Lever 199-1002-35 Upper Receiver (Left) 199-1002-36 Upper Receiver (Right) 199-1002-37 Wire Holder 199-1002-46 Bolt Catch 199-1002-47 Charging Handle 199-1002-48 Charging Handle Latch 199-1002-49 Flash Hider 199-1002-57 Motor Cover Plate 199-1002-66 Magazine Catch 199-1002-67 Magazine Catch Button 199-1002-68 Ejection Port Cover 199-1002-69 Ejection Port Cover Lock 199-1002-72 Stock Swivel 199-1002-77 Selector 199-1002-80 Stock Tube 199-1002-81 Stock Tube Cap 199-1002-82 Stock Tube Retainer 199-1002-83 Receiver End Plate 199-1002-85 Trigger Guard 199-1002-88 Rail Retaining Block 199-1002-89 Top Rail Retainer 199-1002-91 Swivel Front 199-1002-101 Bolt Plate 199-1002-106 Dust Cover Retainer 199-1002-110 Power Supply Connector Parts # Description 199-1002-114 Flash Hider Washer 199-1002-115 Motor Adjustment Screw 199-1002-115-1 Adjustment Screw Spacer 199-1002-120 Take Down Pin (Front) 199-1002-121 Take Down Pin (Rear) 199-1002-123 Gearbox Set Pin 199-1002-125 Hop-Up Bar Pin 199-1002-126 Inner Barrel 199-1002-127 Inner Barrel Stabilizer Ring 199-1002-128 Ejection Port Cover Pin 199-1002-131 Stock Base Screw 199-1002-133 Lever Retainer Nut 199-1002-134 Stock Lever Pin 199-1002-135 Trigger Guard Lock Pin 199-1002-138 Receiver Pin Screws X 2 199-1002-142 Top Rail Pin 199-1002-158 Hop-Up Nub 199-1002-159 Hop-Up Bucking 199-1002-161 Forward Assist Button Spring 199-1002-162 Hop-Up Spring 199-1002-163 Charging Handle Spring 199-1002-164 Charging Handle Latch Spring 199-1002-165 Flash Hider Spring 199-1002-171 Hop-Up Bar Spring 199-1002-173 Magazine Catch Spring 199-1002-174 Motor Tension Spring 199-1002-175 Ejection Port Cover Spring 199-1002-176 Ejection Port Cover Lock Spring 199-1002-182 Selector Spring 199-1002-183 Stock Bolt Spring 199-1002-185 Trigger Guard Plunger Spring 199-1002-193 Ejection Port Cover Screw 199-1002-194 Swivel Cover Screw 199-1002-196 Stock Bolt 199-1002-198 Wire Clamp Screws X 2 199-1002-201 Carry Handle Lock Screws X 2 199-1002-202 Sight Knob Spacer 199-1002-203 Rail Retainer Screw 199-1002-204 Bolt Plate Carrier Screw 199-1002-205 Magazine Catch Screw 199-1002-208 Motor Plate Screws X 2 Metric 199-1002-209 Selector Screw 199-1002-210 BB Ramp Screws X 2 199-1002-214 Flash Hider/Stock Retainer Nut Screw 199-1002-215 Windage Knob Set Screw 20
KM4A1 PARTS LIST (Continued) Parts # Description 199-1002-218 Trigger Guard Set 199-1002-219 Cap Set Screw 199-1002-226 Hop-Up Wheel Screw 199-1002-227 Grip Screws X 2 199-1002-229 Charging Handle Latch Pins X 2 199-1002-231 Gas Tube Pin 199-1002-233 Swivel Cover Pin 199-1002-234 Forward Assist Button Pin 199-1002-236 Trigger Guard Roll Pin 199-1002-237 Barrel Base Pins (Small) 199-1002-239 Front Swivel Pin 199-1002-240 Stock Bolt Washer 199-1002-242 Pin Retaining Ring 199-1002-243 Hop-Up Spindle Rings X 2 199-1002-244 Delta Ring Locking Clamp 199-1002-249 Fuse 199-1002-250 Power Supply Wire 199-1002-252 Gear Box Assembly 199-1002-253 Motor 199-1002-254 Motor Pinion Gear 199-1002-257 Lower Hand Guard 199-1002-258 Top Hand Guard 199-1002-259 Rear Sight 199-1002-260 Windage Knob 199-1002-261 Elevation Knob Dial Base 199-1002-262 Elevation Knob Dial 199-1002-263 Inner Barrel Stabilizer 199-1002-265 Barrel Assembly Block 199-1002-266 Top Rail 199-1002-267 Delta Ring Parts # Description 199-1002-269 Barrel Nut 199-1002-271 Carry Handle 199-1002-272 Carry Handle Lock Front A 199-1002-273 Carry Handle Lock Rear B 199-1002-274 Rear Sight Housing Base 199-1002-275 Front Sight Post 199-1002-276 Front Sight Housing Base 199-1002-277 Swivel Base 199-1002-278 Swivel Base Lock 199-1002-282 Rear Sight Plate Spring 199-1002-283 Carry Handle Locking Plate 199-1002-284 Hand Guard End Cap 199-1002-285 Barrel Base Pin (Large) 199-1002-287 Gas Tube 199-1002-290 Carry Handle Knobs X 2 199-1002-291 Windage Knob Plunger 199-1002-292 Rear Sight Windage Screw 199-1002-293 Elevation Bar 199-1002-294 Rear Sight Elevation Plunger 199-1002-295 Carry Handle Bolts X 2 199-1002-296 Elevation Knob Pin 199-1002-297 Front Sight Plunger 199-1002-298 Front Sight Housing Pins X 2 199-1002-299 Outer Barrel (Rear) 199-1002-299-1 Outer Barrel (Front KM4A1) 199-1002-300 Hand Guard Lock Spring 199-1002-301 Rear Sight Elevation Spring 199-1002-302 Windage Knob Spring 199-1002-303 Front Sight Spring 199-1002-304 Swivel Mount Spacer 21
257 258 126Q 127 159 243 2 5 125 16 171 162 14 158 13 243 226 15 91 239 298 284 231 276 303 297 275 287 214 49 114 165 299-2 299 285 237 263 242 128 176 19 69 68 193 175 269 267 300 265 244 249-1 250 110 101 142 203 266 89 88 36 203 296 161 1 104 KM4 CQB PARTS DIAGRAM KM4 SERIES 22
209 6-1 77 182 24 82 196 240 210 120 46 173 67 205 121 83 80 81 219 253 254 174 9 85 236 138 123 66 218 185 135 227 57 208 115 115-1 208 8 37 198 138 17 137S 25 47 48 164 163 7 204 229 252 134 183 26 28 233 131 27 194 72 217 29 133 KM4 CQB PARTS DIAGRAM 23
KM4 SERIES KM4 CQB PARTS LIST Parts # Description 199-1002-1 Forward Assist Button 199-1002-2 Inner Barrel Retainer 199-1002-3 BB Ramp 199-1002-5 Hop-Up Housing 199-1002-6 Selector Lever Detente 199-1002-7 Bolt Plate Carrier 199-1002-8 Selector Cover 199-1002-9 Grip 199-1002-13 Hop-Up Adjustment Wheel 199-1002-14 Hop-Up Spindle (Small) 199-1002-15 Hop-Up Spindle (Large) 199-1002-16 Hop-Up Bar 199-1002-17 Lower Receiver 199-1002-19 Ejection Port Cover Lock Plunger 199-1002-24 Selector Plate 199-1002-25 Charging Handle Spring Hook 199-1002-26 Retracting Stock 199-1002-27 Swivel Cover 199-1002-28 Stock Latch Spacer 199-1002-29 Stock Lever 199-1002-35 Upper Receiver (Left) 199-1002-36 Upper Receiver (Right) 199-1002-37 Wire Holder 199-1002-46 Bolt Catch 199-1002-47 Charging Handle 199-1002-48 Charging Handle Latch 199-1002-49 Flash Hider 199-1002-57 Motor Cover Plate 199-1002-66 Magazine Catch 199-1002-67 Magazine Catch Button 199-1002-68 Ejection Port Cover 199-1002-69 Ejection Port Cover Lock 199-1002-72 Stock Swivel 199-1002-77 Selector 199-1002-80 Stock Tube 199-1002-81 Stock Tube Cap 199-1002-82 Stock Tube Retainer 199-1002-83 Receiver End Plate 199-1002-85 Trigger Guard 199-1002-88 Rail Retaining Block 199-1002-89 Top Rail Retainer 199-1002-91 Swivel Front 199-1002-101 Bolt Plate 199-1002-104 Dust Cover Retainer 199-1002-110 Power Supply Connector Parts # Description 199-1002-114 Flash Hider Washer 199-1002-115 Motor Adjustment Screw 199-1002-115-1 Adjustment Screw Spacer 199-1002-120 Take Down Pin (Front) 199-1002-121 Take Down Pin (Rear) 199-1002-123 Gearbox Set Pin 199-1002-125 Hop-Up Bar Pin 199-1002-126Q Inner Barrel (CQB) 199-1002-127 Inner Barrel Stabilizer Ring 199-1002-128 Ejection Port Cover Pin 199-1002-131 Stock Base Screw 199-1002-133 Lever Retainer Nut 199-1002-134 Stock Lever Pin 199-1002-135 Trigger Guard Lock Pin 199-1002-137S Rear Sight Assembly 199-1002-138 Receiver Pin Screws X 2 199-1002-158 Hop-Up Nub 199-1002-159 Hop-Up Bucking 199-1002-161 Forward Assist Button Spring 199-1002-162 Hop-Up Spring 199-1002-163 Charging Handle Spring 199-1002-164 Charging Handle Latch Spring 199-1002-165 Flash Hider Spring 199-1002-171 Hop-Up Bar Spring 199-1002-173 Magazine Catch Spring 199-1002-174 Motor Tension Spring 199-1002-175 Ejection Port Cover Spring 199-1002-176 Ejection Port Cover Lock Spring 199-1002-182 Selector Spring 199-1002-183 Stock Bolt Spring 199-1002-185 Trigger Guard Plunger Spring 199-1002-193 Ejection Port Cover Screw 199-1002-194 Swivel Cover Screw 199-1002-196 Stock Bolt 199-1002-198 Wire Clamp Screws X 2 199-1002-203 Rail Retainer Screw 199-1002-204 Bolt Plate Carrier Screw 199-1002-205 Magazine Catch Screw 199-1002-208 Motor Plate Screws X 2 Metric 199-1002-209 Selector Screw 199-1002-210 BB Ramp Screws X 2 199-1002-214 Flash Hider/Stock Retainer Nut Screw 199-1002-218 Trigger Guard Set Screw 199-1002-219 Cap Set Screw 199-1002-226 Hop-Up Wheel Screw 24
KM4 CQB PARTS LIST (Continued) Parts # Description Parts # Description 199-1002-227 Grip Screws X 2 199-1002-229 Charging Handle Latch Pin 199-1002-231 Gas Tube Pin 199-1002-233 Swivel Cover Pin 199-1002-236 Trigger Guard Roll Pin 199-1002-237 Barrel Base Pin (Small) 199-1002-238 Top Rail Pin 199-1002-239 Front Swivel Pins X 2 199-1002-240 Stock Bolt Washer 199-1002-242 Pin Retaining Ring 199-1002-243 Hop-Up Spindle Rings X 2 199-1002-244 Delta Ring Locking Clamp 199-1002-249 Fuse 199-1002-250 Power Supply Wire 199-1002-252 Gear Box Assembly 199-1002-253 Motor 199-1002-254 Motor Pinion Gear 199-1002-257 Lower Hand Guard 199-1002-258 Top Hand Guard 199-1002-263 Inner Barrel Stabilizer 199-1002-265 Barrel Assembly Block 199-1002-266 Top Rail 199-1002-267 Delta Ring 199-1002-269 Barrel Nut 199-1002-275 Front Sight Post 199-1002-276 Front Sight Housing Base 199-1002-277 Swivel Base 199-1002-278 Swivel Base Lock 199-1002-284 Hand Guard End Cap 199-1002-285 Barrel Base Pin (Large) 199-1002-287 Gas Tube 199-1002-297 Front Sight Plunger 199-1002-298 Front Sight Housing Pins X 2 199-1002-299 Outer Barrel (Rear) 199-1002-299-2 Outer Barrel (CQB Front) 199-1002-300 Hand Guard Lock Spring 199-1002-303 Front Sight Spring 199-1002-304 Swivel Mount Spacer 25
KM4 SERIES KWA 2GX GEARBOX PARTS DIAGRAM M51 M42 M32 M56 M119 M71 M54 M114 M69 M55 M119 M74 M3 M70 M62 M57 M124 M36 M52 M72 M123 M37 M96 M19 M43 M122 M58 M80 M7 M65 M64 M78 M120 M33 M127 M127-1 M127-1 M79 M125 M38 M118 M120 M53 M101 M59 M107 M125 M125 M63 M97 M47 M125 M48 M125 M125 M121 M35 M23 M117 M115 M121 M115 M121 M115 M116 M121 M40 M39 M115 M117 M127-1 M127 M116 M127-1 Parts # Description Parts # Description Parts # Description 2GX.V2-M3 Gearbox Cylinder Head 2GX.V2-M54 Gearbox Wire Harness Base 2GX.V2-M97 Gearbox Bevel Gear 2GX.V2-M7 Gearbox Piston 2GX.V2-M55 Gearbox Power Bridge Plate 2GX.V2-M101 Gearbox Spur Gear 2GX.V2-M19 Gearbox Piston Metal Plate 2GX.V2-M56 Gearbox Switch Bridge Plate 2GX.V2-M107 Gearbox Sector Gear 2GX.V2-M23 Anti-Reverse Latch 2GX.V2-M57 Gearbox Selector Plate 2GX.V2-M114 Gearbox Wire Harness Base Screw 2GX.V2-M32 Gearbox Cylinder Head Buffer 2GX.V2-M58 Gearbox Trigger Switch Block 2GX.V2-M115 Gearbox Mechbox Screw 2GX.V2-M33 Gearbox Cylinder 2GX.V2-M59 Gearbox Wire Retainer 2GX.V2-M116 Gearbox Mechbox Screw 2GX.V2-M35 Anti-Reverse Latch Axis 2GX.V2-M62 Gearbox Mechbox Shell (Left) 2GX.V2-M117 Gearbox Mechbox Screw 2GX.V2-M36 2GX.V2-M37 Gearbox Trigger Switch Contact Plate Gearbox Piston Head 2GX.V2-M63 2GX.V2-M64 Gearbox Mechbox Shell (Right) Gearbox Cut-off Lever 2GX.V2-M118 2GX.V2-M119 Gearbox Piston Head Screw Gearbox Wire Harness Base Screw 2GX.V2-M38 Gearbox Piston Head End Cap 2GX.V2-M65 Gearbox Trigger 2GX.V2-M120 Gearbox Cut-off Lever Screw 2GX.V2-M39 Gearbox Spring Guide End Cap 2GX.V2-M69 Gearbox Trigger Switch Brush / Power Out 2GX.V2-M121 Gearbox Mechbox Screw Locking Washer 2GX.V2-M40 Gearbox Spring Guide Rod 2GX.V2-M70 Gearbox Power Cut-off Brush 2GX.V2-M122 Gearbox Trigger Switch Pin 2GX.V2-M42 2GX.V2-M43 2GX.V2-M47 2GX.V2-M48 Gearbox Tappet Plate Spring Gearbox Trigger Switch Return Spring Gearbox Anti-Reversale Latch Spring Gearbox Main Spring, M120 2GX.V2-M71 2GX.V2-M72 2GX.V2-M74 2GX.V2-M78 Gearbox Trigger Switch Brush / Power In Gearbox Selector Plate Contact Gearbox Air Nozzle Gearbox Cut-off Lever Spring 2GX.V2-M123 2GX.V2-M124 2GX.V2-M125 2GX.V2-M127 Gearbox Piston Head O-Ring Gearbox Cylinder Head O-Ring Gearbox 9mm Bearing Bushing Gearbox Piston Grooved Washer 2GX.V2-M51 Gearbox Tappet Plate 2GX.V2-M79 Gearbox Safety Lever Spring 2GX.V2-M127-1 Gearbox Spring Guide Flat Washer 2GX.V2-M52 Gearbox Safety Lever Base 2GX.V2-M80 Gearbox Trigger Spring 2GX.V2-M53 Gearbox Safety Lever 2GX.V2-M96 Gearbox Piston Head Set Screw 26
K120 MAGAZINE PARTS DIAGRAM 1 33 34 2 3 4 32 36 4 44 4 4 8 6 35 8 7 Part # Description 1 MAGAZINE BODY 2 MAGAZINE BB STOP 3 MAGAZINE BB STOP SRPING 4 MAGAZINE HOUSING SCREW 6 MAGAZINE BASE PLATE 7 MAGAZINE BASE PLATE STOP 8 MAGAZINE BASE PLATE SPRINGS 32 MAGAZINE HOUSING (LEFT PANEL) 33 MAGAZINE HOUSING (RIGT PANEL) 34 MAGAZINE FOLLOWER 35 MAGAZINE FOLLOWER GUIDE 36 MAGAZINE FOLLOWER LINK 44 MAGAZINE FOLLOWER SPRING 27
KWA Performance Industries, Inc. 18571 E. Gale Ave. City of Industry, CA 91748 T: (626) 581-1777 F: (626) 581-0777 WWW.KWAUSA.COM Copyright August 2015 KWA Performance Industries, Inc. All Rights Reserved. KM4 SERIES R2015.08.28